Navigation Links
Our ability to identify the source of pain varies across the body
Date:6/5/2014

"Where does it hurt?" is the first question asked to any person in pain.

A new UCL study defines for the first time how our ability to identify where it hurts, called "spatial acuity", varies across the body, being most sensitive at the forehead and fingertips.

Using lasers to cause pain to 26 healthy volunteers without any touch, the researchers produced the first systematic map of how acuity for pain is distributed across the body. The work is published in the journal Annals of Neurology and was funded by the Wellcome Trust.

With the exception of the hairless skin on the hands, spatial acuity improves towards the centre of the body whereas the acuity for touch is best at the extremities. This spatial pattern was highly consistent across all participants.

The experiment was also conducted on a rare patient lacking a sense of touch, but who normally feels pain. The results for this patient were consistent with those for healthy volunteers, proving that acuity for pain does not require a functioning sense of touch.

"Acuity for touch has been known for more than a century, and tested daily in neurology to assess the state of sensory nerves on the body. It is striking that until now nobody had done the same for pain," says lead author Dr Flavia Mancini of the UCL Institute of Cognitive Neuroscience. "If you try to test pain with a physical object like a needle, you are also stimulating touch. This clouds the results, like taking an eye test wearing sunglasses. Using a specially-calibrated laser, we stimulate only the pain nerves in the upper layer of skin and not the deeper cells that sense touch."

Volunteers were blindfolded and had specially-calibrated pairs of lasers targeted at various parts of their body. These lasers cause a brief sensation of pinprick pain. Sometimes only one laser would be activated, and sometimes both would be, unknown to participants. They were asked whether they felt one 'sti
'/>"/>

Contact: Harry Dayantis
h.dayantis@ucl.ac.uk
44-020-310-83844
University College London
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Vines choke a forests ability to capture carbon, Smithsonian scientists report
2. EPA ToxCast data validates BioMAP® systems ability to predict drug, chemical toxicities
3. Stability lost as supernovae explode
4. MIPT experts reveal the secret of radiation vulnerability
5. Ability to isolate and grow breast tissue stem cells could speed cancer research
6. When highest perceptual ability occurs in a day?
7. UN-­backed symposium: Beyond Gross Domestic Product -- transitioning into sustainability
8. Chronic stress heightens vulnerability to diet-related metabolic risk
9. Research sees overlap in genes altered in schizophrenia, autism, intellectual disability
10. Smoking may dull obese womens ability to taste fat and sugar
11. New model shows moderate resource use & reduced economic inequality keys to sustainability
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Our ability to identify the source of pain varies across the body
(Date:9/12/2014)... and POINT ROBERTS, Washington , ... Investorideas.com ( http://www.investorideas.com ) a global news source covering leading ... and experts on the September 9 th launch of ... of Goode Intelligence, Janice Kephart , founder of the ... Pereira of NXT-ID, Inc, (NASDAQ: NXTD ) ...
(Date:9/11/2014)... Ill. Chicago residents today might have had a ... of Illinois had been approved. It was a straight ... just south of the Rock and Mississippi River confluence. ... had the proposed northern border not been changed, the ... and footprint with the northern 51 miles of the ...
(Date:9/11/2014)... Two Northeastern University researchers and their international colleagues ... the role of neutral evolution in the biogeographic ... published Thursday in the journal Science . ... in a neutral agent-based model"was co-authored by Ferdi ... professor of civil and environmental engineering; his doctoral ...
Breaking Biology News(10 mins):Biometric Experts Comment on Launch of Apple Pay Smart Wallet Payment Service 2Biometric Experts Comment on Launch of Apple Pay Smart Wallet Payment Service 3Biometric Experts Comment on Launch of Apple Pay Smart Wallet Payment Service 4Biometric Experts Comment on Launch of Apple Pay Smart Wallet Payment Service 5Original northern border of Illinois was south of Chicago and Lake Michigan 2Original northern border of Illinois was south of Chicago and Lake Michigan 3Microbes evolve faster than ocean can disperse them 2
... I. Gordon, MD, at Washington University School of Medicine in ... find new ways to diagnose, treat and prevent a critical ... is funded by an $8.3 million grant from the Bill ... link between obesity and the trillions of friendly microbes that ...
... nowadays. It is quite unexceptional for a sports jacket, ... the case of working clothes, the functionality is mostly ... and so on, with wearer comfort (mostly) not being ... their name suggests, hold off bullets but they are ...
... the Salk Institute for Biological Studies and Iowa State ... a role in the production of seed oils, substances ... biofuels. Scoring a rare scientific hat trick, the ... plants ( Arabidopsis thaliana ) that regulate the metabolism ...
Cached Biology News:Washington University receives $8 million to lead international childhood malnutrition effort 2Washington University receives $8 million to lead international childhood malnutrition effort 3Washington University receives $8 million to lead international childhood malnutrition effort 4Real smart: Protective clothing with built-in A/C 2Discovery of plant proteins may boost agricultural yields and biofuel production 2Discovery of plant proteins may boost agricultural yields and biofuel production 3
(Date:9/12/2014)... using an electric field (magnetoelectric memory [MEM] effect), ... technology for information processing and storage. Multiferroic materials ... to the coexistence of electric and magnetic orders. ... electric and magnetic polarizations is rare in known ... MEM effect. This article briefly reviews a new ...
(Date:9/12/2014)... Worcester, Mass. (PRWEB) September 12, 2014 ... the detection and decontamination of chemical and biological ... workshop organized by Worcester Polytechnic Institute (WPI) and ... sponsored by the Science for Peace and Security ... , Part of NATO’s Advanced Research Workshop series, ...
(Date:9/12/2014)... CA (PRWEB) September 12, 2014 Today, ... campaign on Indiegogo. , The film, directed by ... Buzz Aldrin, Shimon Peres, Ashton Kutcher, Will.i.Am, Michio Kaku, ... world and there’s only one university in the world ... help change the lives of a billion people: Singularity ...
(Date:9/12/2014)... Albuquerque, NM (PRWEB) September 12, 2014 ... signed an exclusive option agreement with STC.UNM (STC) for ... New Mexico (UNM) in Albuquerque, New Mexico, and Queen ... group of technologies, called the Recombinant Fluorescent Antibody Technology ... UNM’s Department of Internal Medicine and Dr. Angray Kang ...
Breaking Biology Technology:Worcester Polytechnic Institute to Lead Scientific Workshop on Nanoscale Defenses for Biological and Chemical Threats 2Worcester Polytechnic Institute to Lead Scientific Workshop on Nanoscale Defenses for Biological and Chemical Threats 3Documentary Film that Follows Singularity University Students as They Change the World Launches its IndieGoGo Fundraising Campaign 2Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 2Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 3Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 4
... one of the best possible technologies for providing ... to power our civilization. However, for this dream to ... inexpensive elements using low-cost, less energy-intensive processing chemistry, and ... electricity. A team of researchers with the U.S. Department ...
... SynCardia Systems, Inc. ( www.syncardia.com ), manufacturer of the SynCardia ... company pages on Facebook , Twitter and ... about the world,s only FDA, Health Canada and CE (Europe) ... implants of the Total Artificial Heart, accounting for more than ...
... 31, 2011 BioMed Realty Trust, Inc. (the "Company") ... of the 4.50% Exchangeable Senior Notes due 2026 (CUSIP ... Realty, L.P. (the "Operating Partnership"), which are fully and ... surrender their Notes for purchase by the Operating Partnership ...
Cached Biology Technology:Down to the wire 2Down to the wire 3Down to the wire 4SynCardia Goes Social on Facebook, Twitter and LinkedIn 2SynCardia Goes Social on Facebook, Twitter and LinkedIn 3SynCardia Goes Social on Facebook, Twitter and LinkedIn 4BioMed Realty Announces Repurchase at Option of Holders and Redemption of 4.50% Exchangeable Senior Notes Due 2026 2BioMed Realty Announces Repurchase at Option of Holders and Redemption of 4.50% Exchangeable Senior Notes Due 2026 3BioMed Realty Announces Repurchase at Option of Holders and Redemption of 4.50% Exchangeable Senior Notes Due 2026 4BioMed Realty Announces Repurchase at Option of Holders and Redemption of 4.50% Exchangeable Senior Notes Due 2026 5